package com.atguigu.common;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.sql.SQLIntegrityConstraintViolationException;

//创建异常处理器，专门处理有@RestController注解的类
@ControllerAdvice(annotations = {RestController.class, Controller.class})
@ResponseBody
@Slf4j
public class GlobalExceptionHandler {
    //编写异常处理方法
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
        //log.error(ex.getMessage());
        if(ex.getMessage().contains("Duplicate entry")){
            String[] strings = ex.getMessage().split(" ");
            String msg=strings[2]+"已存在";
            return R.error(msg);
        }
        return R.error("由于未知原因,添加新用户信息失败");
    }
}
